FIELD: engines.
SUBSTANCE: method of sealing air channels consists in using a labyrinth seal. Before labyrinth seal there is a low-pressure cavity, from which air is pumped by centrifugal compressor into a high-pressure cavity. Compressor vanes are arranged on shaft and blade diffuser of compressor - inside fixed casing forming together with shaft a low-pressure cavity. In peripheral part of housing there are drain holes connecting low-pressure cavity with high-pressure cavity.
EFFECT: method enables to reduce flow of air from areas with high pressure to area with lower pressure, higher efficiency of gas turbine engines.
1 cl, 3 dwg
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